● Battery Condition :Brand New；
● Battery type :Li-ion；
● Capacity :57Wh 3695mAh；
● Voltage :15.44V；
● Support: 24 x 7 Email support, Rest assured with 30 days Refund，12 months Replacement；
● Condition: 100% New from Manufacturer, Grade A Cell

● Replacement for Part Number：
L20M4P71 L20C4P71 L20D4P71 L20L4P71 SB10T83217 SB10T83218 SB10T83215 SB10T83216 5B10W13974 5B10W13975 5B10W13972 5B10W13973

● Compatible Models:
Lenovo ThinkPad X1 Carbon 9th Gen Laptop, Lenovo ThinkPad X1 Carbon 9th Gen Type 20XW 20XX Series,

Lenovo ThinkPad X1 Carbon 10th Gen Laptop, Lenovo ThinkPad X1 Carbon 10th Gen Type 21CB 21CC Series,

Lenovo ThinkPad X1 Yoga 6th Gen Laptop, Lenovo ThinkPad X1 Yoga 6th Gen Type 20XY 20Y0 Series,

Lenovo ThinkPad X1 Yoga 7th Gen Laptop, Lenovo ThinkPad X1 Yoga 7th Gen Type 21CD 21CE Series

● Not all the compatible laptop models have been listed, please open the back case of your laptop and choose the right battery model according to your laptop's origibal batte.
● Note:
1.Before placing your order, we highly suggest you to open the back case of your latptop and check out the exact part number of your laptop's original battery.
2.Discharge the new battery use to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times.
3.Do not disassemble, crush or puncture. Do not dispose of in fire or water.
4.If you remove battery for a long time, charge more than 80% at least one time within one months.
5.Don't connect adapter for a long time while using the battery. It may damage the battery.
6.When using the battery, care should be taken to prevent exposure and moisture.